School and Industrial HygieneP. Blakiston, 1880 - 152ÆäÀÌÁö |
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2 ÆäÀÌÁö
... Cloth Binding , 50 cents , each . Sent , postpaid , upon receipt of price , or may be obtained from any bookstore . HEARING , AND HOW TO KEEP IT . With Illustrations . By CHAS . H. BURNETT , M. D. , Aurist to the Presbyterian Hospital ...
... Cloth Binding , 50 cents , each . Sent , postpaid , upon receipt of price , or may be obtained from any bookstore . HEARING , AND HOW TO KEEP IT . With Illustrations . By CHAS . H. BURNETT , M. D. , Aurist to the Presbyterian Hospital ...
40 ÆäÀÌÁö
... clothes at the waist or across the chest , and large enough to permit the free play of every muscle in the body . For this no special costume would be required , except in the highest grades . Music is a great addition to the ex- ercise ...
... clothes at the waist or across the chest , and large enough to permit the free play of every muscle in the body . For this no special costume would be required , except in the highest grades . Music is a great addition to the ex- ercise ...
47 ÆäÀÌÁö
... Clothing should at all times be easy and allow full inspiration by chest or abdomen , without any sense of pressure ; the feeling should be nearly the same as when no clothes are worn . The so - called " dress reform " for women effects ...
... Clothing should at all times be easy and allow full inspiration by chest or abdomen , without any sense of pressure ; the feeling should be nearly the same as when no clothes are worn . The so - called " dress reform " for women effects ...
53 ÆäÀÌÁö
... clothing around the neck , by the effect of a recent hearty meal , or by protracted use of the eyes ; and , in general , by any- thing which causes congestion of the eyes . The eyes are decidedly better able to bear fatigue in the fore ...
... clothing around the neck , by the effect of a recent hearty meal , or by protracted use of the eyes ; and , in general , by any- thing which causes congestion of the eyes . The eyes are decidedly better able to bear fatigue in the fore ...
82 ÆäÀÌÁö
... cloth shades , with rollers , are good ; they had better be rolled at the bottom . Shades with slats are better . White daylight , the unaltered light of white clouds , or the clear sky is better than colored light to work by ; hence ...
... cloth shades , with rollers , are good ; they had better be rolled at the bottom . Shades with slats are better . White daylight , the unaltered light of white clouds , or the clear sky is better than colored light to work by ; hence ...
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134 ÆäÀÌÁö - A child, young person, or woman, shall not be allowed to work between the fixed and traversing part of any self-acting machine while the machine is in motion by the action of steam, water, or other mechanical power.